@charset "UTF-8";.mercator-island-wrapper{width:100%;max-width:1200px;margin:0 auto;min-height:400px}.mercator-island-wrapper>astro-island{display:block;width:100%}.mercator-skeleton[data-astro-cid-tv4rmsn3]{width:100%;aspect-ratio:3/2;max-width:800px;margin:0 auto;transition:opacity .15s ease-out}.skeleton-map[data-astro-cid-tv4rmsn3]{width:100%;height:100%;background:linear-gradient(135deg,#e0e7ff,#c7d2fe);border-radius:8px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1rem;position:relative;overflow:hidden}.skeleton-pulse[data-astro-cid-tv4rmsn3]{width:48px;height:48px;border:3px solid rgba(99,102,241,.2);border-top-color:#6366f199;border-radius:50%;animation:spin 1s linear infinite}.skeleton-text[data-astro-cid-tv4rmsn3]{color:#6366f1b3;font-size:.875rem}@keyframes spin{to{transform:rotate(360deg)}}.mercator-island-wrapper:has(#mercator-root) .mercator-skeleton[data-astro-cid-tv4rmsn3]{display:none}._pageContainer_zz3yw_2{min-height:100vh;background:#fafafa;padding:1rem .5rem}._pageContent_zz3yw_8{max-width:none;margin:0 auto}._header_zz3yw_13{text-align:center;margin-bottom:1.5rem}._header_zz3yw_13 h1{font-size:1.75rem;font-weight:600;color:#1a1a2e;margin-bottom:.5rem}._subtitle_zz3yw_24{font-size:.9rem;color:#555;margin:0}._mainContent_zz3yw_30{display:flex;flex-direction:column;align-items:center;gap:1rem}._mainGrid_zz3yw_37{display:flex;flex-direction:column;align-items:center;gap:2rem}._mapSection_zz3yw_44{display:flex;flex-direction:column;align-items:center;gap:.75rem}._controlSection_zz3yw_51{width:100%;max-width:400px}._mapsComparison_zz3yw_56{display:flex;flex-direction:row;align-items:flex-start;gap:1.5rem;justify-content:center}@media (max-width:900px){._mapsComparison_zz3yw_56{flex-direction:column;align-items:center;gap:.75rem}._mapsComparison_zz3yw_56 ._mercatorWrapper_zz3yw_69{order:-1}}._mercatorWrapper_zz3yw_69{display:flex;flex-direction:column;align-items:center}._mapLabel_zz3yw_80{margin-top:.5rem;font-size:.8rem;color:#888;text-align:center}._mapCanvas_zz3yw_87{border:1px solid #e0e0e0;border-radius:8px;box-shadow:0 2px 4px #00000014}._globeContainer_zz3yw_93{display:flex;flex-direction:column;align-items:center}._globeCanvas_zz3yw_99{border-radius:50%;box-shadow:0 2px 4px #00000014}._globeLabel_zz3yw_104{margin-top:.5rem;font-size:.8rem;color:#888;text-align:center}._controlPanel_zz3yw_111{background:#fff;border-radius:8px;box-shadow:0 2px 4px #00000014;padding:1.5rem}._controlTitle_zz3yw_118{font-size:1.25rem;font-weight:600;color:#1a1a2e;margin-bottom:1.5rem}._controlGroup_zz3yw_125{margin-bottom:1rem}._controlLabel_zz3yw_129{display:block;font-size:.875rem;font-weight:500;color:#333;margin-bottom:.5rem}._labelHint_zz3yw_137{font-size:.75rem;color:#888;margin-left:.5rem}._slider_zz3yw_143{width:100%;height:.5rem;background:#e5e7eb;border-radius:9999px;appearance:none;cursor:pointer}._slider_zz3yw_143::-webkit-slider-thumb{appearance:none;width:1rem;height:1rem;background:#228b22;border-radius:50%;cursor:pointer;transition:background .15s ease}._slider_zz3yw_143::-webkit-slider-thumb:hover{background:#186218}._slider_zz3yw_143::-moz-range-thumb{width:1rem;height:1rem;background:#228b22;border-radius:50%;border:0;cursor:pointer}._sliderLat_zz3yw_172::-webkit-slider-thumb{background:#2563eb}._sliderLon_zz3yw_176::-webkit-slider-thumb{background:#228b22}._sliderRotation_zz3yw_180::-webkit-slider-thumb{background:#b8860b}._sliderZoom_zz3yw_184::-webkit-slider-thumb{background:#c0392b}._presetsSection_zz3yw_188{margin-top:1.5rem}._presetsTitle_zz3yw_192{font-size:.875rem;font-weight:500;color:#333;margin-bottom:.5rem}._presetsGrid_zz3yw_199{display:grid;grid-template-columns:repeat(2,1fr);gap:.5rem}._presetButton_zz3yw_205{padding:.5rem .75rem;font-size:.875rem;background:#f8f9fa;border:0;border-radius:6px;cursor:pointer;transition:all .15s ease;color:#333}._presetButton_zz3yw_205:hover{background:#e9ecef;color:#228b22}._legend_zz3yw_220{margin-top:1.5rem;padding-top:1rem;border-top:1px solid #e0e0e0;font-size:.875rem;color:#555}._legendTitle_zz3yw_228{font-weight:500;color:#333;margin-bottom:.5rem}._legendList_zz3yw_234{list-style:none;padding:0;margin:0}._legendList_zz3yw_234 li{margin-bottom:.25rem}._legendRed_zz3yw_243{color:#c0392b}._legendBlue_zz3yw_247{color:#2563eb}._legendOrange_zz3yw_251{color:#b8860b}._legendNote_zz3yw_255{margin-top:.75rem;font-size:.75rem;color:#888}._presetBar_zz3yw_261{display:flex;align-items:center;gap:.75rem;flex-wrap:wrap;justify-content:center}._presetChips_zz3yw_269{display:flex;align-items:center;gap:.375rem;flex-wrap:wrap;justify-content:center}@media (max-width:900px){._presetChips_zz3yw_269{flex-wrap:nowrap;overflow-x:auto;-webkit-overflow-scrolling:touch;justify-content:flex-start;width:100%;padding-bottom:.25rem;scrollbar-width:none}._presetChips_zz3yw_269::-webkit-scrollbar{display:none}}._presetChip_zz3yw_269{padding:.35rem .7rem;font-size:.8rem;background:#fff;color:#333;border:1px solid #e0e0e0;border-radius:16px;cursor:pointer;transition:all .15s ease;white-space:nowrap;flex-shrink:0}._presetChip_zz3yw_269:hover{background:#f8f9fa;border-color:#228b22;color:#228b22}._presetChipActive_zz3yw_309{background:#228b22;color:#fff;border-color:#228b22}._presetChipActive_zz3yw_309:hover{background:#186218;border-color:#186218;color:#fff}._resetButton_zz3yw_320{padding:.35rem .75rem;font-size:.8rem;font-weight:600;background:#228b22;color:#fff;border:0;border-radius:16px;cursor:pointer;transition:all .15s ease}._resetButton_zz3yw_320:hover{background:#186218}._resetButtonDisabled_zz3yw_335{background:#ccc;cursor:not-allowed}._resetButtonDisabled_zz3yw_335:hover{background:#ccc}._hint_zz3yw_343{margin:0;padding:.5rem .75rem;font-size:.85rem;color:#555;background:#fffc;border-radius:6px;text-align:center}._infoBar_zz3yw_353{display:flex;align-items:center;justify-content:center;gap:1rem;font-size:.75rem;color:#888}@media (max-width:900px){._infoBar_zz3yw_353{flex-direction:column;gap:.25rem;font-size:.7rem}}@media (max-width:900px){._operationHintDesktop_zz3yw_370{display:none}}._operationHintMobile_zz3yw_375{display:none}@media (max-width:900px){._operationHintMobile_zz3yw_375{display:inline}}._currentValue_zz3yw_384{font-family:monospace}._controlBar_zz3yw_388{display:flex;align-items:center;gap:1rem;flex-wrap:wrap;justify-content:center}._currentSettings_zz3yw_396{display:flex;gap:1.5rem;padding:.5rem 1rem;background:#fff;border-radius:6px;font-size:.8rem;color:#888;box-shadow:0 1px 2px #0000000d}._currentSettings_zz3yw_396 span{white-space:nowrap}._settingsSection_zz3yw_410{width:100%;max-width:1200px;margin:1.5rem auto 0}._settingsToggle_zz3yw_416{display:flex;align-items:center;gap:.5rem;width:100%;padding:.75rem 1rem;font-size:.9rem;font-weight:500;color:#333;background:#fff;border:1px solid #e0e0e0;border-radius:8px;cursor:pointer;transition:all .15s ease}._settingsToggle_zz3yw_416:hover{background:#f8f9fa;border-color:#c7c7c7}._settingsToggleIcon_zz3yw_436{font-size:.75rem;color:#888}._settingsContent_zz3yw_441{margin-top:.5rem;animation:_slideDown_zz3yw_1 .2s ease-out}@keyframes _slideDown_zz3yw_1{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}._explanationSection_zz3yw_456{max-width:800px;margin:2rem auto 0;background:#f8f9fa;border-radius:8px;padding:1.5rem}._explanationTitle_zz3yw_464{font-size:1.25rem;font-weight:600;color:#1a1a2e;margin-bottom:1.5rem}._explanationStep_zz3yw_471{display:flex;gap:1rem;margin-bottom:1.25rem}._explanationStep_zz3yw_471:last-of-type{margin-bottom:0}._stepNumber_zz3yw_480{flex-shrink:0;width:2rem;height:2rem;background:#228b22;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:600;font-size:.875rem}._stepContent_zz3yw_494{flex:1;padding-top:.25rem}._stepTitle_zz3yw_499{font-weight:600;color:#333;margin-bottom:.375rem}._stepDescription_zz3yw_505{font-size:.875rem;color:#555;margin:0;line-height:1.6}._stepDescription_zz3yw_505 strong{color:#228b22;font-weight:600}._formula_zz3yw_516{margin-top:1.5rem;padding:1rem;background:#fff;border-radius:8px;border-left:4px solid #228b22}._formulaTitle_zz3yw_524{font-size:.75rem;font-weight:600;color:#228b22;text-transform:uppercase;letter-spacing:.05em;margin-bottom:.5rem}._formulaContent_zz3yw_533{font-family:Courier New,Courier,monospace;font-size:1rem;color:#333;margin-bottom:.5rem}._formulaExample_zz3yw_540{font-size:.8rem;color:#555;margin:0}._educationSection_zz3yw_546{max-width:800px;margin:1.5rem auto 0;background:#f8f9fa;border-radius:8px;padding:1.5rem}._educationTitle_zz3yw_554{font-size:1.25rem;font-weight:600;color:#1a1a2e;margin-bottom:1rem}._factsList_zz3yw_561{list-style:none;padding:0;margin:0}._fact_zz3yw_561{display:flex;align-items:flex-start;gap:.75rem;padding:.75rem 0;border-bottom:1px solid #e0e0e0}._fact_zz3yw_561:last-child{border-bottom:none}._factIcon_zz3yw_578{font-size:1.5rem;flex-shrink:0}._factContent_zz3yw_583{flex:1}._factTitle_zz3yw_587{font-weight:600;color:#333;margin-bottom:.25rem}._factDescription_zz3yw_593{font-size:.875rem;color:#555;margin:0}@media (max-width:768px){._pageContainer_zz3yw_2{padding:.5rem .25rem}._header_zz3yw_13 h1{font-size:1.5rem}._controlPanel_zz3yw_111{padding:1rem}._presetsGrid_zz3yw_199{grid-template-columns:1fr}._presetBar_zz3yw_261{gap:.5rem}._presetChips_zz3yw_269{gap:.25rem}._presetChip_zz3yw_269{padding:.3rem .5rem;font-size:.75rem}._resetButton_zz3yw_320{padding:.3rem .6rem;font-size:.75rem}._resetButton_zz3yw_320{width:100%;max-width:200px}}._breadcrumb_zz3yw_631{display:flex;align-items:center;gap:.5rem;font-size:.8rem;color:#888;margin-bottom:1rem}._breadcrumb_zz3yw_631 a{color:#2563eb;text-decoration:none}._breadcrumb_zz3yw_631 a:hover{text-decoration:underline}._breadcrumb_zz3yw_631 span{color:#888}._articleSection_zz3yw_650{max-width:800px;margin:2rem auto 0;padding:0 .5rem}._articleTitle_zz3yw_656{font-size:1.3rem;font-weight:700;color:#1a1a2e;margin-bottom:1rem;padding-bottom:.5rem;border-bottom:2px solid #228b22}._articleSubtitle_zz3yw_665{font-size:1.05rem;font-weight:600;color:#333;margin:1.25rem 0 .5rem}._articleText_zz3yw_672{font-size:.9rem;color:#555;line-height:1.8;margin-bottom:.75rem}._tableWrapper_zz3yw_679{overflow-x:auto;margin:1rem 0;-webkit-overflow-scrolling:touch}._comparisonTable_zz3yw_685{width:100%;border-collapse:collapse;font-size:.85rem}._comparisonTable_zz3yw_685 th,._comparisonTable_zz3yw_685 td{padding:.6rem .75rem;text-align:left;border-bottom:1px solid #e0e0e0}._comparisonTable_zz3yw_685 th{background:#f8f9fa;font-weight:600;color:#1a1a2e;white-space:nowrap}._comparisonTable_zz3yw_685 td{color:#333}._comparisonTable_zz3yw_685 tr:hover td{background:#228b220a}._faqSection_zz3yw_709{max-width:800px;margin:2rem auto 0}._faqItem_zz3yw_714{border-bottom:1px solid #e0e0e0}._faqItem_zz3yw_714 summary{padding:.75rem 0;font-weight:600;font-size:.9rem;color:#333;cursor:pointer;list-style:none;display:flex;align-items:center;gap:.5rem}._faqItem_zz3yw_714 summary:before{content:"＋";font-size:.8rem;color:#228b22;flex-shrink:0}._faqItem_zz3yw_714 summary::-webkit-details-marker{display:none}._faqItem_zz3yw_714[open] summary:before{content:"－"}._faqItem_zz3yw_714 p{margin:0 0 .75rem;padding-left:1.3rem;font-size:.875rem;color:#555;line-height:1.7}._lastUpdated_zz3yw_748{max-width:800px;margin:1.5rem auto;text-align:right;font-size:.75rem;color:#888}._leadText_zz3yw_756{max-width:800px;margin:0 auto 1.5rem;font-size:.95rem;color:#555;line-height:1.8;text-align:center}